Use of the event-related P300 potential in cochlear implant subjects for the study of strategy-dependent speech processing.

The present overview is a compilation of the results of several event-related potential (ERP) studies on auditory cortical processing, performed in the Evoked Potential Laboratory of the University Medical Centre of Nijmegen. To study speech perception performance in cochlear implant (CI) subjects, ERPs were obtained from subjects with poor and moderate performance. The present report describes the relationships between speech-coding strategies, the presentation of speech by the CI processor, the P300 potential as a measure of speech discrimination, time effects in the long term and speech recognition in relation to ERPs.